Instructional materials influence what students are taught and how teachers teach. An innovative, comprehensive, and diverse portfolio of instructional materials that implement standards-based reform in mathematics, the natural and social sciences, and technology education is required for preK-12+ education. This paper discusses the history of the Instructional Materials Development (IMD) program--including development, dissemination, adoption, and implementation--and provides a glimpse into the future of the program. (CCM)